[sdiy] DOD R-870 flanger/doubler mods & "slabrato"

[anthony]

A while back I mentioned getting one of these on eBay. I just wanted to 
comment on how much I love this unit and on a mod that I did. It's super 
versatile. I got it because it was cheap because it needed fixed and because 
I saw the spread on modezero.com and that it had both an SAD512 and an 
MN3005.

I initially got it because I wanted a flanger but after playing with it I 
decided that I like the long delay settings the best. So much so that I put 
in a bigger timing cap. I put in an 82 pF in place of the 25 pF and that was 
too big - a quarter of the delay range was just squeal. So then I put in a 
56 pF which seems pretty good but I think a 60 pF would be just right.

It's still really noisy even with the compandor. I need to modify one of my 
LM1894 Dynamic Noise Reduction units for guitar use...

A delay like this for me is much more useful than a simple delay like a Boss 
DM2. Modulating it really shallow and fast gives and effect that I call 
"slabrato". It begins like slapback, but that tail is vibrato. Being able to 
invert it and add regeneration makes it liquid. And it would be probably 
useless if you couldn't adjust wet/dry. If I wanted to and if I had two amps 
I could run one full dry and one full wet or any in between.

Coupled with the mods that I did to my Epiphone EP-800R amp (with a tiny 
spring reverb), if I took my guitar somewhere with me all I would need is 
this effect, but it sounds especially cool with my Peavey Hotfoot (yes 
heavilly modified) and the Small Clone Clone that I made (I'm going to find 
a little clown sticker and dub the pedal the "small clown")

I guess this relates to synth DIY because as soon as I finish my guitar FX 
synth, my guitar will essentially be a synth controller. The synth will act 
as an actual synth that runs random melodies modified by the guitar input 
and will also function as an effects unit. I got my inspiration from the 
Korg Guitar Synth and the Sherman Filterbank. But I digress...